Apparatus for use in treating wood.



f s. s. WILLIAMS. APPARATUS FOR USE IN TREATING WOOD.

APPLIOATIOH FILED JAN. 27, 1908.

^ Patented Nov.24c,1908.

PATENT OFFICE. A

SIDNEY S. WILLIMS, OF PROVIDENCE, RHODE ISLAND.

APPARATUS FOR USE IN TREATIN G WOOD.

lo all wlw-m it may concern:

Be it known that I, SIDNEY S. WILLIAMS, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode island, have invented. a new and useful. Apparatus for Use in Treating lV ood, of which the foliowing is a specificatlon.

This invention relates to an apparatus designed for use in treating wood; and has for its object to provide a structure for such purpose whereby the pores of wood in the form of lumber or manufactured articles! may be filled with a liquid preservative r oil, also for drying and steaming wood in its various forms and conditions.

Another object of the invention is to provide.means for introducing the preservative or oil into the chamber solely by atmospheric pressure set up by creating a vacuum therein, and permitting the unused preserving iuid at the end of the operation to flow by gravity from the chamber back into the storage tank.

ing the same to oil and withdrawing the same, which means consists in cleansing the extraneous oil from the wood by live steam which, condensing, enters with the oil and i dirt into a separate tank Where, after settling, the oil is withdrawn and the waste matter discharged from the tank.

The accompanying drawin represents a vertical longitudinal section o the apparatus.

The numeral 1 indicates a horizontally disposed chamber made preferably of sheet metal, in the manner of va steam boiler, and rectangular in cross section with vertical walls 2. Through one of the walls is made a door opening surrounded by a frame 3 in which lits a door 4 having its4 edges provided with some form of packing 5 to seal the door opening air tight when the door is closed and fastened. Coils 6 of steam pi e lie close to the four walls and the top o the chamber within the same, to which coils steam is conveyed through a pipe 7 from a suitable boiler or steam generator, not shown, the admission of steam being controlled by a valve 8.

T o permit entrance to the chamber on the side provided with the door 4, a header 9 may be used on each side of the door opening and connected at the top of the chamber by a cross pipe 410 above said door opening. The pipe coils 6 are fastened to the walls and top of the chamber in anysuitable manner,

'Speccation of Letters Patent. Application led January 27, 1.908. Serial No. 412,866.

Patented Nov. 24, 1908.

y as by bars 11 or stirrups 12, thus strengthenwhen wood is to be steamed, or cleaned after the chamber is an inlet valve 14 to admit air to the chamber at certain times as will be hereinafter described.

The chamber 1 rests on a foundation 15-of masonry or concrete divided by a partition wall 16 into two receptacles or tanks 17 and -18 the former tank having a greater cubical capacity than the latter. A pipe 19, pro* vided with a valve 20, leads from the bottom of the chamber 1 into the larger tank 17 and asimilar pipe 21 opens into the smaller tank V 18, said pipe also having a valve 2,2. The 2 valves 20 and 22 may be operated from outside the tanks in the manner shown. From A further object of the ,invention resides in means for treating the wood after subjectthe bottom of the smaller tank 18 a waste pipe 23, intercepted by a valve 211, leads to a sewer or some other place for receiving refuse materials.

Connected to the top of the chamber 1 is an air pipe 25 leading to an exhaust pump tionally at 26. A second pump, also conventionally shown at 27, is arranged to pump liquid from the smaller tank 1S through a pipe 28 and force it into the larger tank by way of the pipe 29.

To use the apparatus above described, articles to be treated whether in the form of lumber or manufactured products after preuntil it is full, a slight space separating them from the pipe coils G, and care taken that as much as possible of the surface of each -article be exposed. After closing and fastening the door, the valve S is opened admitting steam to the coils G which kiln dries the articles in the usual manner by dry steaming.

After thoroughly drying the articles the valve 14 on top of the chamber is closed as chamber is then exhausted by the air pump 26 after which the valve 20 is opened and the preserving fluid in the tank 17 passes up the pipe 19 into the chamber and fills it. The preservative enters more or less rapidly l into the pores of the wood. When the wood l ber when occasion demands, as for instancebeing subjected to an oil bath. On top'of Avious seasoning, are placed in the chamber 1- ar'e also the valves 20 and22.V The air in the of any suitable construction shown conventive, the inlet valve 111 and the valve 20 are opened and the unused preservative runs back into the tank 17. The door is then opened and the articles removed from the i chamber.

Wood designed for building purposes can be successfully saturated with oil by substituting it for the preservative in the tank 17. After treatment and the oil returned to tank 17, the valves heretofore mentioned are again closed and live steam under lightpressure introduced into the chamber through the valves 13 for the purpose of cleaning the articles of excess oil making them more convenient to handle. The valve 22 is after- Wards opened Vand the mixture of oil, condensed steamand dirt iiows from the chamber into the smaller tank 18 Where after settling the oil is pumped back into the tank 17 by the pump 27.

What is claimed is:

1. An apparatus for use in treating Wood comprising a chamber for the-Wood to be treated, a door therefor ada ted to be closed air tight, steam pipe coils Within said chamber, an air inlet Avalve for said chamber,

tanks below said chamber one or which isl 4adapted to contain the Huid for treating the Wood and the other for receiving Waste from said chamber, a valved pipe extending from said chamber directly into each tank, and means for exhausting air from said chamber to cause the treating iiuid to enter the same solely by atmospheric pressure and How from said chamber when the air inlet valve is opened into the treating fluid tank.

2. An apparatus for use in treating Wood comprising a closed chamber for the wood to be treated having a door in one side adapted to close air tight, steam pipe coils Within i said chamber on its sides and top, means for rigidly holding said pipe coils to said parts for strengthening them against external pressure, valves in said coils operative from Without to admit steam into the chamber, means for exhausting air from the chamber to cause the treating liquid to enter solely i by atmospheric pressure, and means for admitting air to the chamber to permit the surplus of said treating uid escaping therefrom by gravity.

3. An apparatus for use in treating Wood comprising a closed chamber for the Wood provided With an air tight door, tanks be 10W said chamber one for holding the treating liquid and the other to receive Waste from said chamber, means for heating the chamber by steam passingthrough pipe coils, means for exhausting air .from the chamber and filling the same with the treating liquid from said holding tank by atmospheric presturn by gravity of the surplus treating liquid to the holding tank.

4. An apparatus for use in treating Wood comprising a closed chamber for the Wood provided with an air-tight door, a tank below said chamber for holding the treating fluid, a second and smaller tankl also below the chamber to receive the fluid Waste .therefrom, a valved pipe connecting the larger tank directly with said chamber, steam pipes within the chamber for heating the same, means for exhausting air from said chamber to cause the treating liquid to enter therein y SIDNEY s. WILLIAMsf Witnesses v J ANE E. BEEBE, CHARLES vE. SALIsBUnY.

sure alone, and means for permitting the reby atmospheric pressure when the valved 

